---
title: "Introduction"
slug: "introduction-to-data-types"
updated: 2026-03-07T06:16:12Z
published: 2026-03-07T06:16:12Z
canonical: "help.mail-and-deploy.com/introduction-to-data-types"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.mail-and-deploy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

### General

Every value in a Mail & Deploy expression has one of the following data types:

- Boolean
- List
- Number
- String
- Date-Time
- Color